Why is Tom Brady still playing football?

Now in his 40s, Tom Brady is old, at least by football standards. He has won five Super Bowls and three NFL MVP awards. So why does he keep playing? The answer: rushing. He has a goal of becoming a 1,000-yard rusher for his regular season career. In order to do this, Brady trains hard on a beach. When he shared his reason for not retiring, some of his teammates teased him.